diff --git a/doc/rest-nvim-api.txt b/doc/rest-nvim-api.txt
index b3330a4..f858de0 100644
--- a/doc/rest-nvim-api.txt
+++ b/doc/rest-nvim-api.txt
@@ -372,6 +372,7 @@ utils.gq_lines({lines}, {filetype})                             *utils.gq_lines*
 
     Returns: ~
         (string[])
+        (boolean)   Whether formatting is done with `gq`
 
 
 ==============================================================================
diff --git a/lua/rest-nvim/ui/result.lua b/lua/rest-nvim/ui/result.lua
index f4be7cc..c914703 100644
--- a/lua/rest-nvim/ui/result.lua
+++ b/lua/rest-nvim/ui/result.lua
@@ -76,9 +76,8 @@ local panes = {
                     )
                 )
                 local content_type = data.response.headers["content-type"]
-                table.insert(lines, "")
-                table.insert(lines, "# @_RES")
                 local body = vim.split(data.response.body, "\n")
+                local body_meta = {}
                 if content_type then
                     local base_type, res_type = content_type[1]:match("(.*)/([^;]+)")
                     if base_type == "image" then
@@ -87,9 +86,19 @@ local panes = {
                         body = { "Binary answer" }
                     elseif config.response.hooks.format then
                         -- NOTE: format hook runs here because it should be done last.
-                        body = utils.gq_lines(body, res_type)
+                        local ok
+                        body, ok = utils.gq_lines(body, res_type)
+                        if ok then
+                            table.insert(body_meta, "formatted")
+                        end
                     end
                 end
+                local meta_str = ""
+                if #body_meta > 0 then
+                    meta_str = " (" .. table.concat(body_meta, ",") .. ")"
+                end
+                table.insert(lines, "")
+                table.insert(lines, "# @_RES" .. meta_str)
                 vim.list_extend(lines, body)
                 table.insert(lines, "# @_END")
             else
diff --git a/lua/rest-nvim/utils.lua b/lua/rest-nvim/utils.lua
index 0071c4a..11503a6 100644
--- a/lua/rest-nvim/utils.lua
+++ b/lua/rest-nvim/utils.lua
@@ -288,6 +288,7 @@ end
 ---@param lines string[]
 ---@param filetype string
 ---@return string[]
+---@return boolean ok Whether formatting is done with `gq`
 function utils.gq_lines(lines, filetype)
     logger.debug("formatting with `gq`")
     local format_buf = vim.api.nvim_create_buf(false, true)
@@ -313,12 +314,12 @@ function utils.gq_lines(lines, filetype)
         logger.debug(("formatting %s filetype with formatprg=%s"):format(filetype, formatprg))
     else
         logger.debug(("can't find formatexpr or formatprg for %s filetype. Formatting is canceled"):format(filetype))
-        return lines
+        return lines, false
     end
     vim.api.nvim_buf_call(format_buf, function()
         vim.cmd("silent normal gggqG")
     end)
-    return vim.api.nvim_buf_get_lines(format_buf, 0, -1, false)
+    return vim.api.nvim_buf_get_lines(format_buf, 0, -1, false), true
 end
 
 return utils